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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system 13.08.2004
Error
code
Diagnostic
code
Device Display Meaning for the LMV5x system Troubleshooting
2D --- BU Valve not open Closed Position Indicator (CPI) = on, but
should have been off
2D 00 BU Valve not open Closed Position Indicator (CPI) = on, but
should have been off
2D 01 BU Valve not open (Only LMV52...) CPI via terminal StartRe-
lease_Gas
Closed Position Indicator (CPI) = on, but
should have been off
Check the parameters or signal: DW-DK/CPI and StartRe-
lease_Gas
2E --- BU Valve or Closed Position Indicator (CPI)
open
Closed Position Indicator (CPI) = on, but
should have been off
2E 00 BU Valve or Closed Position Indicator (CPI)
open
Closed Position Indicator (CPI) = on, but
should have been off
2E 01 BU Valve or Closed Position Indicator (CPI)
open
(Only LMV52...) CPI via terminal StartRe-
lease_Gas
Closed Position Indicator (CPI) = on, but
should have been off
Check the parameters or signal: DW-DK/CPI and StartRe-
lease_Gas
2F --- BU Gas Pressure has dropped below mini-
mum Limit
Gas pressure < Min
30 --- BU Gas Pressure has exceeded maximum
Limit
Gas pressure > Max
31 --- BU Gas Pressure w Valve proving:
Valve on Gas Side leaking
Gas pressure VP = high
32 --- BU No Gas Pressure Valve Proving:
Valve on Burner Side leaking
Gas pressure VP = low
33 --- BU Oil Pressure on although Oil Pump off Oil pressure > Min
34 --- BU Oil Pressure below Minimum Oil pressure < Min
35 --- BU Oil Pressure above Maximum Oil pressure > Max
36 --- BU No Start Release for Oil Start release oil = off
37 --- BU No direct Heavy Oil Start Heavy oil direct start
38 --- BU Lack of Gas Program Shortage-of-gas program in progress
39 # BU Internal Fault Basic Unit Parameter of max. safety time faulty
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